Defensive publication

ABSTRACT

COATING COMPOSITIONS CONTAINING (A) A CROSS-LINKABLE, WATER DISPERSIBLE, OIL FREE ALKYD RESIN AND (B) A WATERDISPERSIBLE AMINO RESIN SUCH AS UREA-FORMALDEHYDE AND MELAMINE FORMALDEHYDE, BOTH OF SAID RESIN COMPONENTS BEING DISPERSED IN AN AQUEOUS MEDIUM TO FORM A DISPERSION WHICH CAN BE APPLIED TO PRODUCE WATER INSOLUBLE, TOUGH, FLEXIBLE COATINGS ON A VARIETY OF SURFACES SUCH AS THOSE OF METAL, WOOD, FABRIC AND THE LIKE. THE WATER-DISPERSIBLE ALKYD RESIN IS PREPARED BY REACTING A POLYOL WITH A DIBASIC ACID, A PORTION OF WHICH ACID IS DIMETHYLSODIUMSULFOISOPHTHALIC ACID. THE RESULTING RESIN WILL HAVE HYDROXYL GROUPS ALONG THE POLYMER CHAIN WHICH CONTRIBUTE CROSS-LINKABILITY WITH AN AMINO RESIN AND IS FURTHER CHARACTERIZED BY HAVING IONIC GROUPS DERIVED FROM THE DIMETHYLSODIUMSULFOISOPHTHALIC ACID COMPONENT ALSO DISTRIBUTED ALONG THE POLYMER CHAIN. THE TWO RESIN COMPONENTS ARE DISPERSED IN AN AQUEOUS MEDIUM TO FORM A SPRAYABLE COMPOSITION WHICH, WHEN APPLIED TO SURFACES TO BE PROTECTED AND THEREAFTER HEAT-TREATED, PRODUCT TOUGH, FLEXIBLE, WATERINSOLUBLE COATINGS BY CROSS-LINKING OF THE TWO COMPONENTS.

DEFENSIVE UBLICATION UNITED STATES PATENT OFFICE Published at the request of the applicant or owner in accordance with the Notice of Dec. 16. 1969, 869 0.6. 687. The abstracts of Defensive Publication applications are identified by distinctly numbered series and are arranged chronologically. The heading of each abstract indicates the number of pages of specification, including claims and sheets of drawings contained in the application as originally filed. The files of these applications are available to the public for inspection and reproduction may be purchased for 30 cents a sheet.

Defensive Publication applications have not been examined as to the merits of alleged invention. The Patent Oflice makes no assertion as to the novelty of the disclosed subject matter.

PUBLISHED JUNE 22, 1971 T887,025 AQUEOUS COATING COMPOSITIONS AND WATER-INSOLUBLE COATINGS PRODUCED THEREFROM Jack W. Lowe, 520 Rambling Road 37663, and James M. Hawkins, 2104 E. Sevien 37664, both of Kingsport, Tenn., and Larry G. Curtis, 3606 Cimarron Drive,

Johnson City, Tenn. 37601 Filed May 28, 1970, Ser. No. 41,579 Int. Cl. C08g 37/34 US. Cl. 26029.40A No Drawing. 16 Pages Specification Coating compositions containing (A) a cross-linkablc, water-dispersible, oil-free alkyd resin and (B) a waterdispersible amino resin such as urea-formaldehyde and melamine-formaldehyde, both of said resin components being dispersed in an aqueous medium to form a dispersion which can be applied to produce Water insoluble, tough, flexible coatings on a variety of surfaces such as those of metal, wood, fabric and the like. The water-dispersible alkyd resin is prepared by reacting a polyol with a dibasic acid, a portion of which acid is dimethylsodiumsulfoisophthalic acid. The resulting resin will have hydroxyl groups along the polymer chain which contribute cross-linkability with an amino resin and is further characterized by having ionic groups derived from the dimethylsodiurnsulfoisophthalic acid component also distributed along the polymer chain. The two resin components are dispersed in an aqueous medium to form a sprayable composition Which, when applied to surfaces to be protected and thereafter heat-treated, produce tough, flexible, waterinsoluble coatings by cross-linking of the two components. 

